Don't be naive, I was asking a person whom wrote in Swahili. What happens if he doesn't understand english then? You need to learn more about effective communication. My point was not to write in English, I only wanted to know whether he still have containers for sale that's all.
If I wanted to ask you something or interested to engage with you probably I would write in English. Lastly you dont have any right to ask me what language I should use. It's your problem if you do not understand swahili. So please take a chill pill and relax.